Substituted hexahydro-1, 3, 5-triazines



United States Patent M of Germany No Drawing. Filed Apr. 2, 1965, Ser. No. 445,233

Claims priority, application glermany, Apr. 9, 1964,

27 Claims. cl. 260-248) The present invention relates to particular substituted hexahydro-1,3,5-triazines having significant herbicidal properties and to the production and use thereof.

It is known that those substituted ureas used as the starting materials for the production of the particular compounds of the present invention, for example, 1- methyl-3-(Z-benzothiazolyl)-urea, exhibit strong herbicidal properties (of US. Patent No. 2,756,135).

It is an object of the present invention to provide an improvement in the herbicidal art and, more specifically, to provide substituted hexahydro-l,3,5-triazines having strong herbicidal properties, especially as compared with those of substituted ureas heretofore used.

It is another object of the present invention to provide particular substituted hexahydro-l,3,5-triazines having significant herbicidal properties which may be used on post-emergence plants or weeds which are to be destroyed, and which when so used are extremely effective.

It is still another object of the present invention to provide a process for producing such substituted hexahydro-1,3,5-triazines.

It is still another object of the present invention to provide herbicidal formulations including such particular substituted hexahydro-1,3,5-triazines in admixture with a carrier vehicle and especially a dispersible liquid or a dispersible finely divided solid carrier vehicle, with such triazine being present in a herbicidally effective amount for killing the undesired plants and/ or weeds.

It is still another object of the present invention to provide a method of using such substituted hexahydro- 1,3,5-triazines by applying such triazines alone or in admixture with a carrier 'vehicle to such weeds and the soil area where such weeds are growing in a herbicidally effective amount of the particular triazine in question.

It is a further object of the present invention generally to provide new particular substituted hexahydro-l,3,5- triazines having significant herbicidal properties, herbicidal formulations or compositions containing the same with a carrier vehicle, as well as methods of producing such triazines and using the same in destroying and controlling weeds and undesired plants in the soil.

Other and further objects of the present invention will become apparent from a study of the within specification and the accompanying examples.

It has now been found in accordance with the present invention that the particular substituted hexahydro-l,3,5- triazines of the general formula:

wherein Z represents an oxygen or sulfur atom; R represents a hydrocarbon radical containing 1 to 4 carbon atoms; R represents a hydrocarbon radical containing 1 3,379,725 Patented Apr. 23, 1968 to 6 carbon atoms, which may optionally contain heteroatoms; and

A and B, which may be the same or different, represent hydrogen atoms or hydrocarbon radicals containing l to 4 carbon atoms, or A and B together represent a hydrocarbon bridge member containing 3 to 5 carbon atoms;

exhibit strong herbicidal properties, especially when they are used after the emergence of the plants whch are to be destroyed.

The particular substituted hexahydro-1,3,5-triazines of the above-noted general Formula I are obtained when substituted ureas or thioureas of the general formula:

wherein Z, R, A and B have the same meanings as set forth above, are reacted with formaldehyde and a primary amine of the general formula:

R'-NH (III) wherein R has the same meaning as set forth above.

It is surprising that such substituted hexahydrol,3,5- triazines according to the present invention should have an appreciably higher herbicidal activity and, in particular, a selective herbicidal activity, as compared with the kinds of activity possessed by the ureas and thioureas known at present and in fact used as the starting materials for the production of the new triazines of the present invention. These known ureas and thioureas are believed to be the chemically most closely related active compounds with the same type of activity. The new compounds according to the present invention thus constitute a valuable addition to the art.

In accordance with a particular embodiment of the present invention, when 1-(2-benzthiazolyl)-3-methylurea, formaldehyde and n-butylamine are, for example, used as the starting materials, the reaction can be represented by the following equation:

The ureas and thioureas to be used as starting materials, in accordance with the present invention, are clearly characterized by general Formula II. In this formula, Z is an oxygen or sulfur atom, R is preferably an alkyl radical containing 1 to 4 carbon atoms or an alkenyl radical containing 2 to 4 carbon atoms and A and B preferably represent hydrogen atoms or alkyl or alkenyl containing up to 4 carbon atoms or, when A and B are joined, they preferably stand for unsaturated hydrocarbon bridge members, such as a 1,4-butadiene bridge member.

The primary amines to be used as starting materials,

in accordance with the present invention, are clearly characterized by general Formula III. In this formula, R preferably denotes an alkyl radical containing 1 to 6 carbon atoms or an alkenyl radical containing 2 to 6 carbon atoms, which may optionally contain oxygen, sulfur and/or nitrogen atoms. In these cases, the preferred radicals are alkoxy, alkylmercapto, alkylamino or as natural ground minerals (for example, kaolins, aluminas, talc or chalk) and synthetic ground minerals (for example, highly-dispersed silicic acid or silicates); emulsifiers such as non-ionic and anionic emulsifying agents dialkylamino-alkyl radicals. 5 (for example, polyethylene oxide esters of fattyacids, As examples of substituted ureas or thioureas correpolyethylene oxide ethers of fat alcohols, alkyl sulfonates sponding to general Formula II which can be used accordand aryl sulfonates), and dispersing agents, such as lignin ing to the present invention, there may be mentioned 1- spent sulfite liquors and methylcellulose. [2 benzthiazolyl]-3-methylurea, 1-[2-benzthiazolyl1-3- The active compounds according to the present invenbutylurea, l-[Z-benzthiazol-yl]-3-allylurea, 1-[2-benzthition may be present in such compositions advantageously azolyl] 3-m'ethyl-thiourea, 1-[2-(4-rnethyl)-thiazolyl]-3- in the form of mixtures with known active compounds. methyl-thiourea and 1-[2-(4-methyl)-thiazolyl]-3-rnethyl- In general, the compositions contain substantially beurea tween about 0.1 and 95 percent by weight of the active As examples of primary amines corresponding to gencompound, preferably substantially between about 0.5 and eral Formula III which can be used according to the pres- 90 percent by weight. ent invention, there may be mentioned methylamine, e mpounds according to the present inve ethylamine, n-propylam'ine, n-butylamine, isobutylamine, which an? Usable P 56 of in the m f t ir C mallylamine, 3 methoxy-propylamine, Z-methoxy-ethyl- Positions are pfbfefflbly pp after the emergence of amine and 3-dimethylamine-propylamine. the plants which are to be destroyed. Their application Organic solvents, such as cycloaliphatic ethers, espeis Carried Out y the usual methods, f r exampl y cially C -C cycloalkyl ethers, for example dioxan, and Watbfiflg, Spraying, Vapor p y dispersing 0f dustingsolvents i h a hi h di l moment, h as dialkyl- The amounts to be used during this operation depend alkanoylamides, especially C C diloweralkyl-C -C lowon a Variety Of factors, Such as P Soil, Webd and er alkanoyl amides, for example dimethyl formamide, can Weather cohditibhs- In g the amounts pp are be used as the diluents, as well as water. Mixtures of such Substantially betwebn about 2 and 10 P hectare and tio di may l b d, the concentrations of the active compounds vary sub- The reaction temperatures in accordance with the presn i lly tw n a ut 0.01 and 0.5%. ent invention may be varied within a fairly wide range. T activity of the compounds according to the present In g neral, the rea tio i i d t t a temperature invention is almost exclusively restricted to the existing substantially betwee abo t 0 a d 150 C, f bl vegetation. This can prove to be aconsiderable advantage Substantially between about 20 to 100 C when new cultivated plants are to be sown in the soil after When carrying out the process of the present inven- Weed Control s n Carri d uttion, it is expedient to use 2 moles of a solution of formal- The following eXamples are given for the P p 0f dehyde for each mole of the substituted urea or thiourea illustrating, While not limiting, the Present inventionand, after a reaction period of about half an hour, to add EXAMPLE A 1 mole of a primary amine.

Advantageously, the compounds according to the pres- Postemergence testent invention have very good herbicidal properties, parsolventz 4 Parts by Weight acetonei l l if they are applied ft the emergence of the Emulsrfier: 0.2 part by Weight henzyloxy-polyglycol ether. plants. They canalso be used for selective Weed control in T produce a it bl preparation of tive compound, agricultural cultivation, for instance on beets, tomatoes, 1 part b Weight f active Compound is mixed with the p tatoes a d a stated amount of solvent, the stated amount of emulsifier The Compounds accordmg to erg n i n can is added and the concentrate is then diluted with water be converted into the usual compositions such as emulsifito h d i concentration ablefiohcehtfatesi p y P p Soluble p h Test plants of about 5l5 cm. height are sprayed with dustlng agents gfahulates- Thesb are p rg 1n the preparation of the active compound until just dew kn n m p 0 n y extending e active moist. After three weeks, the degree of damage to the pounds Wlth dlshcrsl l C r 1 r V6h l ln ng plants is determined and characterised by the values 0-5, vents and/on SOlld particle carriers, optlonally with the hi h h h f ll i meaning; use of emulsifiers and/or dispersing agents (cf. Agricultural Chemicals, March 1960, pages 35-38). The follow- OMNO effect; ing may be chiefly considered as adjuvants for this pur- 1A few shghfly burnt spots pose: solvents, such as aromatic hydrocarbons (for ex- 2Marked damaga to leaves ample, chlorobenzenes), paraflins (for example, petro- 3 Some i and parts of Stalks Partially deadleum fractions), alcohols (for example, methanol or bu- 4*Planf partially destroyed tanol, isobutanol, etc.), amines (for example, ethanol- 5Plam completely dead amine}, aliphatic fatty acid esters, such as ethyl acetate, The active compounds, their concentrations and the etc., dimethyl formamide and water; solid carriers, such results obtained can be seen from the following table:

TABLE Active Compound 5... '3 P, S o S is g 9, a z e 6e 2 ,2 e a a (VIII) 0 0 2 r 4 5 4 r r 0: 15 3 2 e5 4 i g (i i g g g 1 CN N-CI-I 0. 1 5 1-2 4 3 1 5 0 1 5 5 5 5 0 I 0.05 5 1 3 1 a s 0 0 5 5 5 5 u i CHFCHT'CHFOCHQ TABLE-Continued A t c d g4? E c we ompoun g m Pg. 8 z

agD-t '6 a g U3 c I, H :1 .E o aaossms ae as LO 5 cu ,Q g E 03 '3 M Q a q) a O H o co 1 ,4 .4 o mzmookzemworamm 0 N II o 0.2 5 5 5 5 5 5 5 4 5 5 5 5 1 0.15 5 4 4-5 4 4 5 4 3 5 5 5 5 0 C-N N-OH; 0.1 5 3 4 3 3 5 2 2 5 5 5 5 0 I I 0.05 5 2 3 2 2 5 1 1 5 5 5 5 0 H2O CH3 I CH5 (VII) 0 N II o 0.2 5 5 5 3 5 5 4-5 5 5 5 5 5 3 0.15 5 4 4-5 3 5 5 4 4-5 5 5 5 5 2 CN N-CH; 0.1 5 3 4 3 5 5 4 4 5 5 5 5 0 1 0.05 5 1 2 1 3 3 3 3 5 5 5 5 0 H2O CH2 I CH2CHzCH2-CH3 0 N II c 0.2 5 5 5 3-4 4-5 5 2 4 5 5 5 5 1 0.15 5 4-5 4-5 a 4 5 1 3 5 5 5 5 0 CN NCH3 0.1 5 4 4 3 4 5 0 2 5 5 5 5 0 I 0.05 5 4 4 2 3 5 0 1 4 5 5 5 0 H2O CH1 I CHPCH=OH2 S N II o 0.2 5 1 4 1 4 4 2 1 5 5 5 5 0 0.15 4 0 3 0 3-4 3-4 1 0 4-5 5 5 4-5 0 C--N N-OH 0.1 3 0 2 0 2 3 0 0 4 5 5 3 0 l I 0.05 3 0 1 0 2 2 0 0 4 5 4 3 0 H2O CH;

I CH2CH20Hr-0oH5 As may be seen from the table, where Compound VIII is used, a distinct herbicidal preference is shown for weeds as opposed to agricultural crops. In concentrations of 0.05% by weight, such compound is not detrimental to potatoes, beans or tomatoes to any extent, and is only slightly influential in retarding the growth of beets and cotton, although somewhat more influential in retarding the growth of oats and wheat. Thus, in such low concentration, this compound may be used selectively to rid a particular soil area of weeds and, if desired, also of oats and wheat, especially where oats and wheat had been previously planted in the area but because of a rotation of crops are being replaced by another plant crop, such as potatoes, beans, tomatoes, cotton or beets. Of course, at a concentration of 0.1% by weight, beans are slightly retarded in growth while beets are slightly more retarded, whereas cotton is more significantly retarded and oats and wheat are pronouncedly retarded in growth. By utilizing this somewhat larger concentration of Compound VIII, a gradient of selectivity may be provided wherein in addition to wheat and oats, cotton and to some extent beans and beets may be retarded in growth, such as in the case where tomatoes or potatoes are to be planted in consequence of a rotation of crops procedure. At a further increased concentration of 0.15% by Weight, a preference for delaying growth in wheat and oats is still prevalent, and this it true also with respect to cotton, whereas beets and beans are still only slightly delayed in their growth. At a higher concentration of 0.2% by weight, only potatoes and tomatoes are unalfected to any extent, and the incremental differences in concentration may thus be used in accordance with the present invention to retard growth selectively, not only of weeds but of various agricultural plant crops, as the case may be, so as to preserve a particular soil acreage or area primarily for one or two types of plant crops to the exclusion of one or more others.

In the same way, considering Compound IX, it will be seen that at the low concentration of 0.05% by weight, effective inhibition of the growth of various weeds is attained with only somewhat pronounced retardation of growth of cats and slightly pronounced retardation of growth of beets, cotton and wheat. At such concentration, only slight retardation is exhibited with respect to tomatoes and beans while potatoes are unaffected completely. As the concentration increases to 0.1%, a consistent increase in retardation is attained consonant with that at the above-noted lower percent, and at 0.15% con centration generally beets, oats, cotton, wheat, tomatoes and beans are retarded pronouncedly in growth while potatoes remain unaffected. At the high concentration of 02%, just about complete retardation of growth is achieved with all but potatoes, these being only slightly retarded in growth. In this instance as well, incremental changes in concentration of the active compound may be used to selectively retard the growth of certain kinds of crops in addition to weeds, as may be desired, but in any case all weeds are destroyed even at the extremely low concentration utilized without seriously affecting a par- 7 ticular plant crop which may be desired to be maintained in a given soil acreage.

Compound VII exhibits at a concentration of 0.05%, the consistent retardation of growth essentially completely of all weeds, save for mustard. At the increased concentration of 0.1%, such mustard is completely inhibited in growth as is wheat as well, whereas tomatoes, beans and oats are pronouncedly inhibited while beets and cotton are only somewhat inhibited. At the higher concentration of 0.15%, the inhibition relationship is retained and at the 0.2% concentration level, only cotton is able to withstand the herbicidal effect of the compound in question along with potatoes, which are not affected except at a concentration of 0.15% and to a greater extent at the 0.2% concentration level. Thus, at a low concentration practically all weeds are destroyed without seriously affecting most of the crop types, yet at increased concentrations selective inhibition may be attained.

The same is true regarding Co-mpound X wherein at the 0.05% concentration, practically all the weeds are destroyed, with oats being pronouncedly retarded in growth along with the weed gallant soldier, beets, cotton and wheat being only somewhat retarded in growth while beans are slightly retarded and potatoes and tomatoes completely unaffected. As the concentration increases to 0.1%, oats and wheat remain pronouncedly affected while beets and cotton are somewhat retarded in growth and beans slightly retarded. Potatoes and tomatoes remain unaffected at such concentration. Increasing the dosage to 1.5% results in a consistent further retardation of beets, oats, cotton, wheat and beans, while tomatoes are only slightly retarded in growth and potatoes still remain unaffected. At the high concentration of 0.2%, beets and oats are completely destroyed, wheat is substantially completely destroyed, beans are substantially destroyed, and cotton is destroyed to a significant extent. Tomatoes are only somewhat retarded in growth while potatoes are only slightly retarded. This instance as well illustrates the selective nature of the particular compound employed for inhibiting and/or retarding the growth of certain types of crops in addition to weeds, depending upon the incremental variations in the effective concentration utilized.

In the case of Compound XI, a particular degree of versatility is possible, since at the low concentration of 0.05%, substantial inhibition of growth of weeds is attained with little or no effect on the different kinds of crops. At 0.1% concentration, the same observations pertain, yet at 0.15% concentration, with substantially complete inhibition of the weeds, only significant inhibition of some kinds of crops also takes place, i.e., oats and wheat. At the high concentration of 0.2%, the relationship remains about the same, yet with only slight retardation of beets, cotton and beans, some retardation of tomatoes, and no retardation of potatoes in spite of the substantial retardation of the growth of oats in addition to the various weeds.

It will be appreciated by the artisan considering the statistics in the foregoing table that by the choice of a particular compound and/ or combination of two or more thereof in accordance with the present invention, and by judicious selection of the particular concentration of the active compound or compounds utilized, one or more of the various kinds of crops can be destroyed or retarded in growth to a desired extent, along with the intended destroying of weeds, so as to provide soil acreage representing a more favorable environment for growing a given, different kind of crop, without weeds and other crops being also present to drain from the soil valuable nutrients meant for such given crop intended to be grown. Of course, the active com-pound, as aforesaid, may be used with a carrier vehicle of the foregoing type and applied in such concentrations at dosages at, for example, substantially between about 2-10 kilograms per hectare.

8 EXAMPLE 1 ntro- CH3 (VIII) 69 g. 1-[Z-benzthiazolyl]-3-methylurea are suspended in 350 m1. dimethyl formarnide and 67 g. of a 30% aqueous solution of formaldehyde are added to it. The temperature rises by 2 C. within 5 minutes during this operation.

Stirring is continued at room temperature for half an hour and 30 g. 3-methoXy-propylarnine are then added dropwise during the course of minutes, the temperature rising from to 39 C. The clear solution is then heated at 90-100" C. for 2 hours and thereafter cooled to 20 C.

The product which crystallizes during this operation is filtered off and recrystallized from ethyl acetate. Yield: 74 g.

1-(2-benzthiazolyl) 3 methyl 5 ('y-methoXy)-propylhexahydro-triazinone-Z in the form of colorless crystals; M.P. 119-120 C.

N-CH;

EXAMPLE 2 CH3 (XXI) 33 g. 1-(2-benzthiazolyl)-3-methylurea are suspended in 200 cc. dimethyl formamide and 32 g. of a aqueous solution of formaldehyde are added to it. Stirring is continued at room temperature for half an hour and 16 cc. of a aqueous solution of methylamine are then added dropwise. Stirring is continued at room temperature for 3 hours. The entire solid material dissolves during this operation. The solution is thereafter heated at C. for 2 hours, filtered to clarify it and evaporated in vacuo (14 mm. Hg). The remaining residue is recrystallized from isobutanol. Yield: 34 g. of colorless crystals; M.P. 161- 162 C.

The following compounds are prepared in an analogous manner:

1-( 2-benzthiazolyl) 3 methyl 5 ('y-methoxy)-propyl- M.P.: -157 C.

l-(2-benzthiazolyl -3methyl-5-allyl-hexahydrotriazinone-Z:

friable mass.

1- (4'-methylthiazol-2'-yl) -3-methyl-5-allyl-hexahydrotriazin-thione-2:

friable mass.

EXAMPLE 3 XXV N I III-CH CH2 34 g. 1-[2-(4-methyl)-thiazolyl]-3-methylurea in 150 ml. dimethyl formamide are treated with 40 g. of a 30% aqueous solution of formaldehyde and stirring is continued at room temperature for 1 hour. 27 cc. of a 25 aqueous solution of methylamine are then added dropwise, the temperature rising slightly. Stirring is continued for 1 hour and the reaction mixture is then heated at 100 C. for 1 hour. The solvent is distilled off in vacuo and the last traces of solvent removed by evaporation in vacuo at a bath temperature of 100 C. The residue consists of 47 g. of an immobile oil.

Analysis.-C H N OS. Molecular weight, 226.2. Calculated: C, 47.65%; H, 6.20%. Found: C, 47.13%; H, 6.62%.

EXAMPLE 4 (XX VI) 50 g. l-[2-(4,5-dimethyl)-thiazolyl] -3-methylurea in 150 ml. dimethyl formamide are treated with 54 g. of a 30% aqueous solution of formaldehyde and stirred at room temperature for 1 hour. 27 ml. of a 25% aqueous solution of methylamine are then added dropwise, the temperature rising slightly.

The reaction mixture is stirred at room temperature for 1 hour and at 100 C. for half an hour. The clear solution is evaporated in vacuo and the residue recrystallized from ligroin. Yield: 25 g.; M.P. 109111 C.

Analysis.C H N. OS. Molecular weight, 240. Calculated: C, 50%;H, 6.67%; N, 23.34%. Found: C, 50.05%; H, 6.86%; N, 23.22%.

The following compound was prepared in an analogous manner.

immobile oil.

Analysis.-C H N4OS. Molecular weight, 282. Calculated: N, 19.30%. Found: N, 19.7%.

It will be appreciated, therefore, that a versatile process may now be provided in accordance with the present invention for the production of substituted hexahydro-l,3,5- triazines which comprises reacting a thiazolyl compound of the formula I /CIIICITIR ]3 H H S in which Z is selected from the group consisting of oxygen and sulfur, R is selected from the group consisting of lower alkyl and lower alkenyl, and A and B are selected from the group consisting, when each is taken separately, of hydrogen, lower alkyl, and lower alkenyl, and, when both are taken together, of an unsaturated hydrocarbon bridge containing 3 to 5 carbon atoms; with formaldehyde, and a primary amine of the formula in which R is selected from the group consisting of lower alkyl, lower alkenyl, lower alkyl containing a hetero linking atom, and lower alkenyl containing a hetero linking atom; to form substituted hexahydro-1,3,5-triazines of the formula in which Z, R, R, A and B are the same as defined above. Such reaction is preferably carried out as aforesaid at a temperature substantially between about 0 and C. and preferably in a reaction medium, such as a member selected from the group consisting of cycloaliphatic ethers, dialkyl-alkanoylamides, water, and mixtures thereof. Accordingly, utilizing l-(2-benzthiazolyl)-3-methylurea and n-butylamine, 1- (Z-benzthiazolyl) -3-methyl-5 -n-buty1 hexahydro-triazinone-2 is formed. Correspondingly, preferred products are obtained where Z in the foregoing formula is oxygen, R is lower alkyl, A and B together represent a divalent 1,4-butadiene linking group, and R is 'y-methoxypropyl or methyl or n-butyl or allyl, and also where Z is sulfur, R is lower alkyl, A and B together represent such a divalent 1,4-butadiene linking group, and R is 'y-methoxy-propyl.

Accordingly, the present invention is directed to substituted hexahydro-1,3,5-triazines of the formula in which Z is selected from the group consisting of oxygen and sulfur, R is selected from the group consisting of lower alkyl and lower alkenyl, R is selected from the group consisting of lower alkyl, lower alkenyl, lower akyl containing :a hetero linking atom, and lower alkenyl containing a hetero linking atom, and A and B are selected from the group consisting, when each is taken separately, of hydrogen, lower alkyl, and lower alkenyl, and, when both are taken together, of an unsaturated hydrocarbon bridge containing 3 to carbon atoms.

The present invention is furthermore directed to herbicidal formulations or compositions comprising a carrier vehicle in admixture with such substituted hexahydro 1,3,5-triazines. The substituted triazine in question, of course, is utilized in a herbicidally effective amount, and generally the composition represents :a mixture of a dispersible carrier vehicle together with substantially between about 0.1 and 95% by Weight of the mixture, and sufficient to destroy weeds, of such a substituted triazine.

Furthermore, the present invention contemplates a method of destroying weeds and the like which comprises applying to such weeds and the soil area where such weeds are growing a herbicidally effective amount of such a substituted triazine. The substituted triazine is preferably applied in an amount substantially between about 2 and kg./hectare in the form of a mixture with a dispersible carrier vehicle such that the application of the substituted triazine is at a concentration of substantially between about 0.01 and 0.5% by weight.

Particular groups of active compounds in accordance with the present invention include those of the type defined hereinabove in which:

(1) Z is sulfur, R is methyl, A and B together represent a divalent 1,4-butadiene linking group, and R is either butyl or allyl;

(2) Z is sulfur, R is allyl, A and B together represent a divalent 1,4-butadiene linking group, and R is either butyl or methyl;

(3) Z is oxygen, R is methyl, A and B together represent a divalent 1,4-butadiene linking group, and R is either ethyl, propyl, -methyl amino propyl, or -dim thvl amino propyl;

(4) Z is oxygen, R is methyl, A represents methyl, B represents hydrogen, and R is either propyl, butyl, or allyl; and

(5) Z is sulfur, R is methyl, A represents methyl, B represents hydrogen, and R is methyl or allyl.

Accordingly, the symbols Z, R, A, B and R as used herein, i.e., both in the specification and claims, may be defined as follows:

Z contemplates oxygen or sulfur;

R contemplates a hydrocarbon radical containing 1-4 carbon atoms, preferably a C -C lower aliphatic radical including lower alkyl and lower alkenyl, especially C -C lower alkyl, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec.-butyl, tert.-butyl, and the like, and C -C alkenyl, such as vinyl, allyl, butenyl, and the like;

A and B, each taken alone, contemplates hydrogen or a hydrocarbon radical containing 1-4 carbon atoms, preferably a C -C lower aliphatic radical including lower alkyl and lower alkenyl, especially C -C lower alkyl, such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, isobutyl, sec.-butyl, tert.-butyl, and the like, and C -C alkenyl, such as vinyl, allyl, butenyl, and the like.

A and B together contemplate a hydrocarbon bridge member containing 3 to 5 carbon atoms, preferably a C -C lower aliphatic radical, including lower alkylene, lower alkenylene, and lower alkadienylene, such as propylene (i.e., trimethylene), butylene (i.e. tetramethylene), pentylene (i.e., pentamethylene), and the like, propenylene, 1- or 2-butenylene, 1- or Z-pentenylene, and the like, propadienylene, 1,2-, 1,3-, 2,3-butadienylene, 1,2-, 1,3-, 1,4-, 2,3-, 2,4-, 3,4-pentadienylene, and the like; and

R contemplates a hydrocarbon radical containing 1 to 6 carbon atoms, preferably a C -C lower aliphatic radical, including lower alkyl and lower alkenyl, especially C -C alkyl, such as methyl, ethyl, n-propyl, iso-propyl,

n-butyl, iso-butyl, see-butyl, tert.-butyl, n-amyl, isoamyl, n-hexyl, iso-hexyl, and the like, and C -C alkenyl, such as vinyl, allyl, butenyl, pentenyl, hexenyl, and the like, also a hydrocarbon radical containing one or more hetero linking atoms, such as oxygen, sulfur, or nitrogen, and including especially:

C -C alkoxy alkyl (i.e., C -C alkoxy-Q-C; alkyl), such as methoxy-pentyl, ethoxy-butyl, propoxy-propyl, butoxy-ethyl, pentoxy-methyl, and the like;

C -C alkylmercapto alkyl (i.e., C -C alkylmercapto- C -C alkyl), such as methylmercapto-pentyl, ethylmercapto-butyl, propylmercapto-propyl, butylmercapto-ethyl, pentylmercapto-methyl, and the like;

C -C alkylamino alkyl (i.e., C -C alkylamino-C -C alkyl, such as methylamino-pentyl,ethylamino-butyl, propylamino-propyl, butylamino-ethyl, pentylamino-methyl, and the like;

C -C dialkylamino alkyl (i.e., C -C dialkylamino- C -C alkyl), such as dimethylamino-methyl, dimethylamino-ethyl, dimethylamino-propyl, dimethylamino-butyl, methyl ethylamino methyl, methyl-ethylamino-ethyl, methyl-ethylamino-propyl, diethylamino-methyl, diethylamino-ethyl, ethyl-propylamino-methyl, and the like; etc.

In particular, in accordance with the present invention, R is preferably a C -C alkyl or C -C alkenyl, such as methyl or allyl; R is preferably a C -C alkyl or C -C alkenyl, C -C alkoxy-C C; alkyl, C -C alkylamino- C -C alkyl, or C -C dialkylamino-Q -C alkyl, such as methyl, ethyl, n-propyl, n-butyl, allyl, methylamino-propyl, dimethylamino-propyl, or methoxy-propyl, i.e., including those radicals containing nitrogen or oxygen as the interrupting hetero atom; A and B each is hydrogen or lower alkyl, or one is hydrogen while the other is lower alkyl, such as hydrogen and/ or methyl, as the case may be; and A and B together represent butadien-1,3- ylene-l,4.

It will be appreciated that the instant specification and of the present invention which is to be limited only by the scope of the appended claims.

We claim: 1. Hexahydro-l,3,5-triazine of the formula in which Z is selected from the group consisting of oxygen and sulfur, R is selected from the group consisting of lower alkyl and lower alkenyl, R is selected from the group consisting of lower alkyl, lower alkenyl, lower alkyl containing a hetero linking atom selected from the group consisting of oxygen, nitrogen, and sulfur, and lower alkenyl containing a hetero linking atom selected from the group consisting of oxygen, nitrogen and sulfur, and A and B are selected from the group consisting, when each is taken separately, of hydrogen, lower alkyl, and lower alkenyl, and, when both are taken together, of an unsaturated hydrocarbon bridge containing 3 to 5 carbon atoms.

2. Hexahydro-1,3,5-triazine of the formula 3. Hexahydro-1,3,5-triazine of the formula 0 N II III-lower alkyl 112 CH; N

4. Hexahydro-1,3,5-triazine of the formula 5. Hexahydro-1,3,5-triazine of the formula 6. Hexahydro-1,3,5-triazine of the formula 10. The compound 1 (2 benzthiazolyl) 3 methyl- S-allyl-hexahydro-triazinone-Z having the formula I o112o H2011:

13. The compound 1-(2benzthiazolyl)-3-methyl-5-allyl-hexahydro-triazin-thione-2 having the formula N N i l om-om-orn-o-om C \C-N/ NCIIs 7. The compound 1 (2 benzthiazolyl) 3 methyl- (3H1 $112 5 ('y methoxy) propyl hexahydro triazinone-2 S having the formula (|JH2CH=OH2 14. The compound 1-(2-benzthiazoly1)-3-a11y1-5-meth, yl-hexahydro-triazin-thione-Z having the formula s II If CI NCHz-CH=CH2 CIIzCII2CIIzOCH CH2 CH2 s s. The compound 1 2 benzthiazolyl) 3,5 di- (IDHK methyl-hexahydro-triazinone-Z having the formula 15. The compound 1-(2-benzthiazolyl)-3-allyl-5-butylhexahydro-tria2in-thione-2 having the formula 9. The compound 1 (2 benzthiazolyl) 3 methyl- 5-butyl-hexahydro-triazinolie-2 having the formula 16. The compound 1 (Z-benzthiazolyl)-3-methyl5- ethyl-hexahydro-triazinone-2 having the formula 17 17. The compound 1 (Z-benzthiazolyl)-3-methyl-5- propyl-hexahydro-triazinone-2 having the formula C 3Hi-CH2C a 18. The compound 1-(2-benzthiaz0lyl)-3-methyl-5-('ymethylamino)-propyl-hexahydro-triazinone-Z having the formula 20. The compound 1-(4-methylthiazol-2'-yl)-3-methyl-S-propyl-hexahydr0-triazinone-Z having the formula 21. The compound 1-(4'-methylthiazo1-2-yl)-3-methyl- 5-butyl-hexahydro-triazinone-2 having the formula 22. The compound 1-(4'methylthiazol-2'-yl)-3-methyl- 5-a1lyl-hexahydro-triazinone-2 having the formula 18 23. The compound 1 (4' methylthiazol-2'-yl)-3,5-dimethyl-hexahydro-triazin-thione-Z having the formula 24. The compound 1-(4'-methylthiazol-2'-yl)-3-methyl- S-allyl-hexahydro-triazin-thione-2 having the formula 25. The compound 1 (4' methylthiazol-2'-yl)-3,5-dimethyl-hexahydro-triazinone-Z having the formula N-CHa 26. The compound 1-(4,5'-dimethylthiazol-2'-yl)-3,5- dimethyl-hexahydro-triazinone-Z having the formula 27. The compound 1 (4',5 dimethylthiazol-2'-yl)-3- methyl-S-butyl-hexahydro-triazinone-Z having the formula References Cited UNITED STATES PATENTS 6/1953 Martone 260-248 X 10/1964 Taber 260248 X OTHER REFERENCES Smolin et aL: S-Triazine and Derivatives, Intel-science Publishers Inc., New York (1959), pp. 537-8.

JOHN D. RANDOLPH, Primary Examiner. I. O. THOMAS, W. A. MODANCE, Examiners.

A. J. ADAMCIK, J. M. FORD, Assistant Examiners. 

1. HEXAHYDRO-1,3,5-TRIAZINE OF THE FORMULA 